20691304

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{197}}^1\times {\mathrm{691}}^1$

素因数の和:913

約数の個数: 32

約数和(自身を含む): 41104800

約数和(自身を除く): 20413496

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 197, 394, 691, 788, 1382, 1576, 2764, 3743, 5528, 7486, 13129, 14972, 26258, 29944, 52516, 105032, 136127, 272254, 544508, 1089016, 2586413, 5172826, 10345652, 20691304]

約数ペア:

[(1, 20691304), (2, 10345652), (4, 5172826), (8, 2586413), (19, 1089016), (38, 544508), (76, 272254), (152, 136127), (197, 105032), (394, 52516), (691, 29944), (788, 26258), (1382, 14972), (1576, 13129), (2764, 7486), (3743, 5528)]